berthyoudaoicibaDictYouDict
berth: [17] Like birth, berth appears to be based on the verb bear, although it is a separate and much later formation. At first it meant ‘safe manoeuvring distance at sea’ (from which we get the metaphorical ‘give a wide berth to’); this seems to have come from the nautical sense of bear ‘steer in a particular direction’ as in bear away (from which we get bear down on, as well as more general applications, such as ‘bear left’). This led, via ‘convenient space for a ship to moor’, to, in the 18th century, the more familiar modern senses ‘sleeping place on a ship’ and ‘job, situation (originally on board ship)’.
=> bear, birth
browbeat (v.)youdaoicibaDictYouDict
"to bully," originally "to bear down with stern or arrogant looks," 1580s, from brow + beat (v.).
[I]t appears from the earliest quotations ... that the brow in question was that of the beater, not of the beaten party; but it is not evident whether the meaning was 'to beat with one's (frowning) brows,' or 'to beat (?lower) one's brows at.' [OED]
Related: Browbeaten; browbeating.
overbear (v.)youdaoicibaDictYouDict
late 14c., "to carry over," from over- + bear (v.). Meaning "to bear down by weight of physical force" is from 1535 (in Coverdale), originally nautical, of an overwhelming wind; figurative sense of "to overcome and repress by power, authority, etc." is from 1560s.
overbearing (adj.)youdaoicibaDictYouDict
figurative present participle adjective from overbear (v.) in its sense "to bear down."