wall; barrier

scratching an itch

one's back

coward

(literary) to play (a drum) / (literary) to envigorate

an old book; a rare book; a classic / a second-hand book

self-introduction

introduce oneself

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend

distal demonstrative, something far off removed from both speaker and listener: that, yon / particularly, male personal third person pronoun: he / by extension from he: boyfriend